Referring to this page for how to build on WIndows 10/Vs2019: OpenCV: Installation in Windows
Using Win10, VS2019.
I want to build for C++17. The default setup wants to build for C++11.
If I just add to CMAKE_OPTIONS this:
-DCMAKE_CXX_FLAGS=-std:c++17
then cmake, in it’s printout of it’s general configuration says these somewhat contradictory things:
-- C++ standard: 11
-- C++ Compiler: C:/Program Files (x86)/Microsoft Visual Studio/2019/Enterprise/VC/Tools/MSVC/14.29.30133/bin/Hostx64/x64/cl.exe (ver 19.29.30147.0)
-- C++ flags (Release): -std:c++17 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /EHa /wd4127 /wd4251 /wd4324 /wd4275 /wd4512 /wd4589 /wd4819 /MP /MT /O2 /Ob2 /DNDEBUG
-- C++ flags (Debug): -std:c++17 /D _CRT_SECURE_NO_DEPRECATE /D _CRT_NONSTDC_NO_DEPRECATE /D _SCL_SECURE_NO_WARNINGS /Gy /bigobj /Oi /fp:precise /EHa /wd4127 /wd4251 /wd4324 /wd4275 /wd4512 /wd4589 /wd4819 /MP /MTd /Zi /Ob0 /Od /RTC1
And it saying the C++ Standard is 11, but C++flags containing -std:c++17 just makes me nervous.
Is there a “proper” way to tell cmake that when it configures for the build, to use C++17?